1121011121001 has 4 divisors (see below), whose sum is σ = 1494681494672. Its totient is φ = 747340747332.

The previous prime is 1121011120993. The next prime is 1121011121039. The reversal of 1121011121001 is 1001211101211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1121011121001 - 2³ = 1121011120993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121010121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186835186831 + ... + 186835186836.

It is an arithmetic number, because the mean of its divisors is an integer number (373670373668).

Almost surely, 2^{1121011121001} is an apocalyptic number.

It is an amenable number.

1121011121001 is a deficient number, since it is larger than the sum of its proper divisors (373670373671).

1121011121001 is an equidigital number, since it uses as much as digits as its factorization.

1121011121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373670373670.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1121011121001 its reverse (1001211101211), we get a palindrome (2122222222212).

The spelling of 1121011121001 in words is "one trillion, one hundred twenty-one billion, eleven million, one hundred twenty-one thousand, one".